| Rapid determination of phenolic compounds in water samples by alternating-current oscillopolarographic titration |
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| 作者姓名： | XIAO Jun-ping WANG Xue-feng ZHOU Qing-xiang FAN Xiao-yuan SU Xian-f Bai Hua-hu DUAN Hai-jing |
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| 作者单位： | XIAO Jun-ping，WANG Xue-feng，ZHOU Qing-xiang，FAN Xiao-yuan，SU Xian-fa，Bai Hua-hua，DUAN Hai-jing Department of Chemistry，University of Science and Technology Beijing，Beijing 100083，China Henan Key Laboratory for Environmental Pollution Control，School of Chemistry and Environmental Sciences，Henan Normal University，Xinxiang 453007，China. |
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| 基金项目： | 河南省杰出人才创新基金
,
河南省自然科学基金
,
the Youth Science Foundation of Henan Normal University
,
河南省重点实验室基金 |
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| 摘 要： | A rapid, simple and sensitive method was demonstrated for the determination of phenolic compounds in water samples by alternating-current oscillopolarographic titration. With the presence of sulfuric acid, phenol could be transferred into a nitroso-compound by reacting with NaNO2. The titration end-point was obtained by the formation of a sharp cut in the oscillopolarographic with infinitesimal NaNO2 on double platinum electrodes. The results showed that phenol concentration had an excellent linear relationship over the range of 4.82×10-6-9.65×10-3 mol/L, the RSD of the proposed method was lower than 1.5%, and the spiked recoveries of three real water samples were in the range of 95.6%-106.9%.
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| 关 键 词： | 水样 酚类化合物 快速测定 交流极谱滴定法 |
| 收稿时间： | 2006-06-17 |
| 修稿时间： | 2006-08-07 |
Rapid determination of phenolic compounds in water samples by
alternating-current oscillopolarographic titration |
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| XIAO Jun-ping,WANG Xue-feng,ZHOU Qing-xiang,FAN Xiao-yuan,SU Xian-f,Bai Hua-hu,DUAN Hai-jing.Rapid determination of phenolic compounds in water samples by alternating-current oscillopolarographic titration[J].Journal of Environmental Sciences,2007,19(5):622-627. |
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| Authors: | XIAO Jun-ping WANG Xue-feng ZHOU Qing-xiang FAN Xiao-yuan SU Xian-f Bai Hua-hua and DUAN Hai-jing |
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| Institution: | 1. Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China
2. Henan Key Laboratory for Environmental Pollution Control, School of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang 453007, China |
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| Abstract: | A rapid, simple and sensitive method was demonstrated for the determination of phenolic compounds in water samples by alternating-current oscillopolarographic titration. With the presence of sulfuric acid, phenol could be transferred into a nitroso-compound by reacting with NaNO2. The titration end-point was obtained by the formation of a sharp cut in the oscillopolarographic with infinitesimal NaNO2 on double platinum electrodes. The results showed that phenol had an excellent linear relationship over the range of 4.82×10-6 -9.65×10-3 mol/L, the RSD of the proposed method was lower than 1.5%, and the spiked recoveries of three real water samples were in the range of 95.6%-106.9%. |
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| Keywords: | alternating-current oscillopolarographic titration phenolic compounds oscillopolarographic titration water phenolic compounds determination real lower results linear relationship range formation double platinum transferred reacting presence sulfuric acid simple sensitive method rapid |
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